MinimOSD_MK2
MinimOSD made smaller with better pinout and USB.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Firmware
After assembly, review the Firmware notes for loading software.
Configuration
There are four jumpers that are useful for configuration.
Two are sets of three pads labeled 12-5. The one closest to the
IN pad sets the camera voltage. Shorting the two pads on the 12
side sends 12V to the camera, and the two closest to the 5 side
sends 5V to the camera. The one nearest the OUT pad is the same for
the VTX.
On the same side, there's an GND jumper which configures a common
ground for the OSD itself and the video.
On the other side, there's one labeled +V which jumps the 5V input
pins so you can have a single 5V input that is used for both outputs
and operating the OSD itself.
BOM
- D1, D2, D3 - 3x 0603 LED
- D5 - 0805 Schottky
- IC4 - MAX7456EUI+
- U1 - Atmega 328P AU
- U2 - 0603 1k Resistor Array OR digikey
- U9 - CP2102
- C1, C2, C3, C4, C5, C6, C17, C19 - 0603 0.1μF
- R1, R14 - 0603 10kΩ
- Y1 - 16MHz resonator
- R2, R3 - 0603 75Ω
- C18 - 1μF cap
- Q1 - 27MHz resonator OR digikey
- C7, C8 - 0603 4.7μF tantalum cap
- J1 - USB micro B or digikey
